![]() Broyles, Bellows High Temperature Cycle Life”, Development in Pressure Vessels and Piping, PVP-Vol. Expansion Joints Manufacturers association, Inc., New York, 2009. Standards of Expansion Joints Manufacturers association (EJMA), 9th Edition. Vasudeva Rao, Sodium Fast Reactors with Closed Fuel Cycle, CRC Press, Boca Raton, 2015. Kallol, Challenges During construction of Sodium Piping systems for 500 MWe Prototype Fast Breeder Reactor, in International Conference on Fast Reactors and Related Fuel Cycles: Next Generation Nuclear Systems for Sustainable Development (FR17), Yekaterinburg, 2017.ī. Imazu, Development of FBR Piping Bellows Joints in Japan, Nucl. The safety margin available over failure based on testing of the bellows is 3.4 under LCF and 3.2 for CFI loading. ![]() The life arrived based on analysis was found to be conservative compared to corresponding life by testing. The LCF and CFI lives of the bellows obtained experimentally were found to be 281 and 237 cycles, respectively. The proposed methodology has been validated by high-temperature testing of the bellows. The LCF and CFI life of the bellows based on analysis were 83 and 74 cycles, respectively. The material parameters required for the visco-plastic constitutive model were generated and validated for fatigue specimens. Subsequently, the detailed visco-plastic finite element analysis of the bellows has been carried out to estimate the high-temperature low-cycle fatigue (LCF) and creep-fatigue (CFI) life. The bellows were preliminarily designed by standards of EJMA for room temperature application. In this investigation, a methodology has been proposed for the high-temperature design of the bellows. Conventional design codes for bellows do not address the high-temperature failure modes. ![]() SS316Ti is one of the widely used materials for bellows in sodium cooled fast reactor systems. ![]()
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